Toy building block



FIG. 1 is a top perspective view of a toy building block showing my newdesign;

FIG. 2 is another top perspective view thereof showing the end oppositethat of FIG. 1;

FIG. 3 is a bottom perspective view thereof;

FIG. 4 is a top perspective view of a modified embodiment of the designshown in FIGS. 1 through 3;

FIG. 5 is a bottom perspective view thereof;

FIG. 6 is a top perspective view of a second modified embodiment of thedesign shown in FIGS. 1 through 3;

FIG. 7 is a bottom perspective view thereof;

FIG. 8 is a top perspective view of a third modified embodiment of thedesign shown in FIGS. 1 through 3; and,

FIG. 9 is a bottom perspective view thereof.

The ornamental design for a toy building block, as shown and described.